In this article, we’ll talk about the tourmaline Hardness Scale and other interesting details that make this gem attractive. This gem has thrilled people for a long time with its many colors.

However, the Paraiba tourmaline owes its rich color to copper. Scientists then discovered that the stones often contain manganese. And it’s this interplay between the two elements that presents a ...

“Pick a tourmaline color that speaks to you and enjoy it in many forms, from natural slices that reveal the stone's color variations to polished jewels of perfect clarity.” ...

The Blue Lagoon Paraiba tourmaline on a necklace by Adler being offered by Sotheby's Geneva. A rare 93.94-carat Paraiba tourmaline from Mozambique, named the “Blue Lagoon,” is a highlight of ...